Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Qual é a superfície da final que teve placar 6-2, 6-3.
 ###Tabelas: CREATE TABLE mixed_doubles:_7_5_titles_2_runner-ups (mixed_doubles:_7_5_titles_2_runner-ups_id AUTO_INCREMENT PRIMARY KEY, Outcome VARCHAR, Year INT, Championship VARCHAR, Surface VARCHAR, Partner VARCHAR, Opponents in the final VARCHAR, Score in the final VARCHAR) CREATE TABLE list_of_current_republican_governors (list_of_current_republican_governors_id AUTO_INCREMENT PRIMARY KEY, Current Governor VARCHAR, State VARCHAR, Past VARCHAR, Took office INT, Current term VARCHAR) CREATE TABLE major_tournaments (major_tournaments_id AUTO_INCREMENT PRIMARY KEY, Year INT, Tournament VARCHAR, Venue VARCHAR, Discipline VARCHAR, Result VARCHAR, Extra VARCHAR) CREATE TABLE medal_count (medal_count_id AUTO_INCREMENT PRIMARY KEY, Rank INT, Nation VARCHAR, Gold INT, Silver INT, Bronze INT, Total INT) CREATE TABLE meistriliiga_clubs_2013 (meistriliiga_clubs_2013_id AUTO_INCREMENT PRIMARY KEY, Club VARCHAR, Position in 2012 VARCHAR, First season in top division INT, Number of seasons in Meistriliiga INT, First season of current spell in top division INT, Top division titles INT)  
SELECT Surface FROM mixed_doubles:_7_5_titles_2_runner-ups WHERE Score in the final = 6-2, 6-3